Spring shoe sole device

Abstract

A shoe sole device comprises two cantilever springs that are each comprised of a top member, a bottom member, and a fulcrum where the top member and bottom member are joined. One cantilever spring is positioned within a user's forefoot area, the other cantilever spring is positioned within the user's heel area, and the fulcrums of both cantilever springs are positioned within the user's midfoot area. The shoe sole device may further include a spring dampening system that includes cushion components positioned in-between the top member and the bottom member of one or both cantilever springs. The cantilever springs may also be adjoined at the fulcrums. The top members of one or both cantilever springs may include at least one rib structure for mechanical support. The shoe sole device may be a removable and replaceable shoe sole insert or insole, or it may be positioned within a shoe's midsole.

1 . A shoe sole device comprising:
 (a) a first cantilever spring comprised of
 a first top member, 
 a first bottom member, and 
 a first fulcrum that adjoins the first top member to the first bottom member; and 
   (b) a second cantilever spring comprised of
 a second top member, 
 a second bottom member, and 
 a second fulcrum that adjoins the second top member to the second bottom member, 
   wherein the first cantilever spring is positioned within a user's forefoot area, the second cantilever spring is positioned within the user's heel area, and the first fulcrum and the second fulcrum are positioned within the user's midfoot area.   
     
     
         2 . The shoe sole device of  claim 1  further comprising a spring dampening system comprised of a first cushion component in-between the first top member and the first bottom member and a second cushion component in-between the second top member and the second bottom member. 
     
     
         3 . The shoe sole device of  claim 1  wherein the first fulcrum and the second fulcrum are connected. 
     
     
         4 . The shoe sole device of  claim 1  wherein the first top member and the second top member each comprise at least one rib structure for mechanical support. 
     
     
         5 . The shoe sole device of  claim 1  further comprising a resilient material above the first cantilever spring and the second cantilever spring. 
     
     
         6 . The shoe sole device of  claim 5  wherein the shoe sole device is a replaceable insole. 
     
     
         7 . The shoe sole device of  claim 1  wherein the shoe sole device is positioned within a shoe's midsole. 
     
     
         8 . The shoe sole device of  claim 1  wherein the first cantilever spring and the second cantilever spring are comprised of steel. 
     
     
         9 . The shoe sole device of  claim 1  wherein the first cantilever spring and the second cantilever spring are comprised of plastic. 
     
     
         10 . A shoe sole device comprising:
 (a) a first cantilever spring comprised of
 a first top member, 
 a first bottom member, 
 an anterior end positioned within a user's toe area, 
 a first medial end opposite the anterior end, and 
 a first fulcrum along the first medial end wherein the first fulcrum adjoins the first top member to the first bottom member; and 
   (b) a second cantilever spring comprised of
 a second top member, 
 a second bottom member, 
 a posterior end positioned within the user's heel area, 
 a second medial end opposite the posterior end, and 
 a second fulcrum along the second medial end wherein the second fulcrum adjoins the second top member to the second bottom member. 
   
     
     
         11 . The shoe sole device of  claim 10  further comprising a spring dampening system comprised of a first cushion component in-between the first top member and the first bottom member and a second cushion component in-between the second top member and the second bottom member. 
     
     
         12 . The shoe sole device of  claim 10  wherein the first medial end and the second medial end are connected. 
     
     
         13 . The shoe sole device of  claim 10  wherein the anterior end and the posterior end are rounded to accommodate the shape of the user's foot. 
     
     
         14 . The shoe sole device of  claim 10  wherein the first top member and the second top member each include at least one depression to contour the shape of the user's foot. 
     
     
         15 . The shoe sole device of  claim 10  wherein the first top member is equal in length to the first bottom member and the second top member is equal in length to the second bottom member. 
     
     
         16 . A shoe sole insert comprising:
 (a) a first cantilever spring positioned within a user's forefoot area comprised of
 a first top member, 
 a first bottom member, 
 an anterior end, 
 a first medial end opposite the anterior end, and 
 a first fulcrum along the first medial end wherein the first top member is adjoined to the first bottom member at the first fulcrum; 
   (b) a second cantilever spring positioned within a user's heel area comprised of
 a second top member, 
 a second bottom member, 
 a posterior end, 
 a second medial end opposite the posterior end, and 
 a second fulcrum along the second medial end wherein the second top member is adjoined to the second bottom member at the second fulcrum; and 
   (c) a resilient material above the first cantilever spring and the second cantilever spring.   
     
     
         17 . The shoe sole insert of  claim 16  further comprising a spring dampening system comprised of a first cushion component in-between the first top member and the first bottom member and a second cushion component in-between the second top member and the second bottom member. 
     
     
         18 . The shoe sole insert of  claim 16  wherein the first medial end and the second medial end are connected. 
     
     
         19 . The shoe sole insert of  claim 16  wherein the resilient material is comprised of foam. 
     
     
         20 . The shoe sole insert of  claim 16  wherein the resilient material is comprised of gel.